Printable the hardest words you will every come upon and this was made by a grade six flash cards

floccinaucinihilipilification

worthless

antidisestablishmentarianism

opposition to the disestablishment of the Church of England

hippopepautomanstrosusquipedaliaphobia

fear of long words

HONORI­FICABILI­TUDINI­TATIBUS

honorableness

HEPATICO­CHOLANGIO­CHOLECYST­ENTERO­STOMIES

a surgical creation of a connection between the gall bladder and a hepatic duct and between the intestine and the gall bladder.

HIPPOPOTO­MONSTRO­SESQUIPED­AL­IAN

pertaining to a very long word

ELECTRO­ENCEPHALO­GRAPHICALLY

joint with ethylene­diamine­tetraacetate

ANTI­TRANSUB­STAN­TIA­TION­ALIST

one who doubts that consecrated bread and wine actually change into the body and blood of Christ.

DIS­PRO­PORTION­ABLE­NESS

These are described by the 1992 Guinness Book of World Records as the longest words in common usage.

ACETYL­SERYL­TYROSYL­SERYL­ISO­LEUCYL­THREONYL­SERYL­PROLYL­SERYL­GLUTAMINYL­PHENYL­ALANYL­VALYL­PHENYL­ALANYL­LEUCYL­SERYL­SERYL­VALYL­TRYPTOPHYL­ALANYL­ASPARTYL­PROLYL­ISOLEUCYL­GLUTAMYL­LEUCYL­LEUCYL­ASPARAGINYL­VALYL­CYSTEINYL­THREONYL­SERYL­SERYL­LEU

tobacco

TETRA­METHYL­DIAMINO­BENZHYDRYL­PHOSPHINOUS

type of acid

FORMALDEHYDE­TETRA­METHYL­AMIDO­FLUORIMUM

chemical term

DICHLORO­DIPHENYL­TRICHLORO­ETHAN

a pesticide used to kill lice; abbrv. DDT.

TRINITRO­PHENYL­METHYL­NITRAMINE

type of explosive

ETHYLENE­DIAMINE­TETRA­ACETIC

a type of acid; abbrv. EDTA

TAUMATA­WHAKA­TANGI­HANGA­KOAUAU­O­TAMATEA­TURIPUKAKA­PIKI­MAUNGA­HORO­NUKU­POKAI­WHENUA­KITANA­TAHU

a hill in New Zealand

GORSA­FAWDDACH­AIDRAIGODAN­HEDDO­GLEDDOLON­PENRHYN­AREUR­DRAETH­CEREDIGION

town in Wales

LLAN­FAIR­PWLL­GWYN­GYLL­GOGERY­CHWYRN­DROBWLL­LLANTY­SILIO­GOGO­GOCH

A town in North Wales

CHAR­GOGAGOG­MAN­CHAR­GOGAGOG­CHAR­BUNA­GUNGAMOG

Another name for Lake Webster in Massachusetts

NUNATH­LOOGAGA­MIUT­BINGOI

The Eskimo name for some dunes in Alaska

floccinaucinihilipilification

worthless

antidisestablishmentarianism

opposition to the disestablishment of the Church of England

hippopepautomanstrosusquipedaliaphobia

fear of long words

HONORI­FICABILI­TUDINI­TATIBUS

honorableness

HEPATICO­CHOLANGIO­CHOLECYST­ENTERO­STOMIES

a surgical creation of a connection between the gall bladder and a hepatic duct and between the intestine and the gall bladder.

HIPPOPOTO­MONSTRO­SESQUIPED­AL­IAN

pertaining to a very long word

ELECTRO­ENCEPHALO­GRAPHICALLY

joint with ethylene­diamine­tetraacetate

ANTI­TRANSUB­STAN­TIA­TION­ALIST

one who doubts that consecrated bread and wine actually change into the body and blood of Christ.

DIS­PRO­PORTION­ABLE­NESS

These are described by the 1992 Guinness Book of World Records as the longest words in common usage.

ACETYL­SERYL­TYROSYL­SERYL­ISO­LEUCYL­THREONYL­SERYL­PROLYL­SERYL­GLUTAMINYL­PHENYL­ALANYL­VALYL­PHENYL­ALANYL­LEUCYL­SERYL­SERYL­VALYL­TRYPTOPHYL­ALANYL­ASPARTYL­PROLYL­ISOLEUCYL­GLUTAMYL­LEUCYL­LEUCYL­ASPARAGINYL­VALYL­CYSTEINYL­THREONYL­SERYL­SERYL­LEU

tobacco

TETRA­METHYL­DIAMINO­BENZHYDRYL­PHOSPHINOUS

type of acid

FORMALDEHYDE­TETRA­METHYL­AMIDO­FLUORIMUM

chemical term

DICHLORO­DIPHENYL­TRICHLORO­ETHAN

a pesticide used to kill lice; abbrv. DDT.

TRINITRO­PHENYL­METHYL­NITRAMINE

type of explosive

ETHYLENE­DIAMINE­TETRA­ACETIC

a type of acid; abbrv. EDTA

TAUMATA­WHAKA­TANGI­HANGA­KOAUAU­O­TAMATEA­TURIPUKAKA­PIKI­MAUNGA­HORO­NUKU­POKAI­WHENUA­KITANA­TAHU

a hill in New Zealand

GORSA­FAWDDACH­AIDRAIGODAN­HEDDO­GLEDDOLON­PENRHYN­AREUR­DRAETH­CEREDIGION

town in Wales

LLAN­FAIR­PWLL­GWYN­GYLL­GOGERY­CHWYRN­DROBWLL­LLANTY­SILIO­GOGO­GOCH

A town in North Wales

CHAR­GOGAGOG­MAN­CHAR­GOGAGOG­CHAR­BUNA­GUNGAMOG

Another name for Lake Webster in Massachusetts

NUNATH­LOOGAGA­MIUT­BINGOI

The Eskimo name for some dunes in Alaska